Perhaps you should try some spelling variations:
thanh trung » thanh tung
danh trung » dang trung, dinh trung, manh trung
hien xanh » hien hanh, hien nhanh, chieu xanh
trong tan » trong quan, trong cac, trong ca
cap dung » ap dung, cao dung, chan dung
tan canh » van canh, dan canh, tao canh
canh cau » canh chau, can cau, danh cau

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((danh trung) OR (thanh trung)) cap dung trong tan canh cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((danh trung) or (thanh trung)) cap dung trong tan canh cau*.